Center diff. id.

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Old 02-05-2008, 06:53 PM
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Default Center diff. id.

I won this off Ebay. It was described as "Ofna super diff". "New ofna spider diff.".
Took it apart and I don't think thats what it is.
Anyone know what it is from/for?
Thanks in advance for any help.
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Old 02-05-2008, 07:03 PM
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It looks like a super diff. It would have to be a torsen diff, but for what model, I don't know. Its not for the Ofna 9.5, as I had one of those diffs. Most of the Ofna diffs had a collar, not a split center housing with a o-ring from what I know

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Old 02-05-2008, 07:39 PM
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I had a Ofna front torsen years ago in my worlds II. If I remember right it had helical cut gears in it. These are straight cut gears (maybe a different type of torsen?). It also came with a larger truggy spur gear (did not count teeth yet). I only paid $.99 for it so if it's not anything good I won't cry.
Thanks again.
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Old 02-05-2008, 08:16 PM
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Its a planetary gear setup, which is something not used on any current buggy that I know of (and I know of most of them). It doesn't look to have any type of limited slip device in the design. I can't say what it is out of for sure, but if I had to guess it may have come out of an old hyper (hobao) buggy because I have seen aluminum diff cases used by them before.
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Old 02-05-2008, 09:31 PM
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OFNA has a forum at http://www.ofna.com/forum/. I'm sure if you post it there you will get an answer.

I've had a couple OFNA's and it doesn't look familiar at all. Like you said their spyder diffs have spiral cut gears and a different case. This one is totally different. If it is from an OFNA I'm guessing it's out of an old monster truck. If you do find out let us know.
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Old 02-06-2008, 03:59 AM
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Actually, now that I really look at the gears, they're not helical or worm gears, just regular straight cut gears. That appears to be a regular diff, with no torque bias action at all.
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